About PerDose

PerDose is a UK price comparison for supplements. It compares products by what they cost per standard dose, form by form, instead of by the price on the tub. It currently covers 5762 products from Bulk, Myprotein, Protein Works, Optimum Nutrition, Applied Nutrition, Reflex Nutrition, Vitabiotics, Boots, Holland & Barrett, Healthspan, Healf, W-Wellness, Collagen Superdose, Lloyds Pharmacy, Vitamin Planet, Higher Nature, Known Nutrition, ZipVit, Wild Nutrition, VitaBright, WeightWorld, Solgar, Viridian Nutrition, Nutravita, Bodybuilding Warehouse, Discount Supplements, Supplement Needs, BioCare, Cytoplan, Simply Supplements, Lamberts Healthcare (Nature's Best), Lyfespan, Bio-Synergy, Together Health.

Who runs PerDose

PerDose is made and run by Patrick Linsdell, trading as PerDose, from 75 Gillbent Road, SK8 6NQ. It is not owned by a retailer or a supplement brand.

Write to hello@perdose.co.uk. A wrong price, a product we have misread or a retailer we should add are the messages we most want. The contact page says where each kind of message goes.

What we do

• Work out the real cost per dose of each product, and show the working.
• Keep different forms of an ingredient in separate tables.
• Set aside any product whose listing we cannot read with confidence, rather than guess.

What we do not do

• We do not recommend what to take, or how much. The standard dose is only a unit for comparing prices.
• We do not make health claims or give medical advice. If you are under 18, pregnant, take medication or have a health condition, speak to a pharmacist or GP.
• We do not rate quality. Where a label claims independent testing we repeat the claim, unverified.
• We do not sell placement. See how we compare and the affiliate disclosure.

Privacy

An account is only for the emails you ask for, and nothing needs one. Visits are counted by kind of page, with no cookie or identifier, and there are no tracking cookies. “Your dose” is kept in the page address, not stored. The privacy page says the rest.

Independence

PerDose is independent. It is not owned by a retailer or a supplement brand, no retailer or brand can pay for position, and the order of every table is decided by price per dose alone. The learn pages are written from the summaries of the studies they cite, and every one is checked against those sources before it publishes.